One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,3)(5,6)(7,13)(8,12)(9,11)(10,14)(15,19)(16,18)(17,20)(22,27)(23,30)(24,26)(28,35)(31,36)(32,33)(1,3,4,2)(5,7)(6,10)(8,15)(9,14)(11,13)(12,17)(16,20)(18,19)(21,22,25,27)(23,31,33,28)(24,34,26,29)(30,35,32,36)(7,14)(10,13)(15,20)(17,19)(21,23,24,32,25,33,26,30)(22,28,34,35,27,31,29,36)(6,11)(10,13)(12,18)(17,19)(21,24,25,26)(22,29,27,34)(23,32,33,30)(28,36,31,35)(5,8,9,16)(6,12,11,18)(7,15,14,20)(10,17,13,19)(22,27)(28,31)(29,34)(35,36)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.